The Blue Sea DC Digital Voltmeter displays voltage on your marine equipment in large (9/16"H) LED characters at three levels of brightness that are easy to read in low light, at angles, and from a distance. Splashproof front is suitable for marine environments. Features audio and visual alarms for high and low voltage. Programmable sleep mode. Easy spin-on mounting system for simple surface mounting with a 2" diameter hole or panel mounting with removable bezel. • Input Voltage: 0-60V DC• Power Consumption: 0.15 Watt minimum; 1.0 Watt maximum• Accuracy: ± 5.0%• Dimensions: 2.9"W x 2.43"H x 3.4"D Three levels of display brightness Measures voltage from 0V to 60V Dc Programmable sleep mode for power conservation | DC Digital Voltmeter with Alarm, 0-60V